Hi,
Someone asked how I recorded the video tutorials.
The videos were done directly on a PC using Camtasia Studio software, which is a very flexible package for doing screencasting. I did all of the video editing within Camtasia primarily because exporting to another video editor (which I tried) introduced unacceptable loss of resolution due to the compression of the video when moving it. It is difficult to do high quality screen casting in a relatively small video window, which is why the frequent zoom/pan is needed.
For audio, I used an Audio Technica AT2020 USB microphone with an isolation mount and pop filter. The quality of this microphone is outstanding - and a huge step up from the USB headsets or direct input mics I tried earlier. I also did some minor soundtrack editing using the free program Audacity which I then imported as needed to Camtasia. For editing I used a pair of Sony MDR-V6 monitoring headphones which were also very high quality. There is only slight background noise in the finished product - primarily from the fans/hard drive vibration from my computer.
I learned quite a bit doing this for the first time, and hope to find time to do more audio/video work in the future.
Cheers,
Brad